A question about copyrightism.

[VampiricTutorNewHD]

Now, I understand GFX. And sound. But I don't see how Ganis and guilds can be copyrighted. That's like saying Universal makes a movie that has people shooting other people in it, and then Columbia Pictures comes and says that it is illegal because they made a movie with that first.
Also, it seems to me most games don't care if they have Turks(to name one) as a guild or not. The MSN Gaming Zone has tons of clans that are in their database that are copyrighted. Nobody bothers them. And nobody will bother you guys. They won't care.